Keep hardworking commercial trucks and buses riding under control with the Monroe Magnum Suspension Shock Absorber 66636, a gas-charged shock designed for class 3-6 vehicles that face high mileage and severe-use conditions. It installs in the FRONT, REAR, or TAG AXLE position depending on the application, serving trucks such as the 1979-1992 GMC G3500, 1975-1978 GMC G35, 2001-2020 Freightliner Coronado, 1987-2021 Kenworth T800, and 2008-2024 Peterbilt 389 — see the Buyer's Guide tab for the full 33-application list.
Backed by Monroe's 90-Day Risk Free Ride Offer and Limited Commercial Warranty.
What is the Monroe Magnum 66636?
It is a gas-charged Magnum suspension shock absorber (MPN 66636) built for class 3-6 commercial trucks and buses that see high mileage and severe-use service.
Which position does it fit?
Depending on the application, the 66636 mounts in the FRONT, REAR, or TAG AXLE position. Check the Buyer's Guide tab to confirm the position for your vehicle.
What vehicles does it fit?
It covers 33 applications, including the 1979-1992 GMC G3500, 2001-2020 Freightliner Coronado, 1987-2021 Kenworth T800, and 2008-2024 Peterbilt 389. See the Buyer's Guide tab for the complete list.
What are signs my shock may need replacing?
Excessive vibration, a rough or bouncy ride, and reduced control can indicate worn shocks. Have the suspension inspected, since these symptoms can have other causes.
How is the ride quality maintained?
The 10-stage valving and nitrogen gas-charge are designed to help maintain tire-to-road contact and reduce aeration and shock fade for a controlled, comfortable ride.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
